Connected: An Internet Encyclopedia
RFC 1332 - 3.3. IP-Address

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### 3.3. IP-Address

Description

  This Configuration Option provides a way to negotiate the IP address to be used on the local end of the link. It allows the sender of the Configure-Request to state which IP-address is desired, or to request that the peer provide the information. The peer can provide this information by NAKing the option, and returning a valid IP-address.

  If negotiation about the remote IP-address is required, and the peer did not provide the option in its Configure-Request, the option SHOULD be appended to a Configure-Nak. The value of the IP-address given must be acceptable as the remote IP-address, or indicate a request that the peer provide the information.

  By default, no IP address is assigned.

A summary of the IP-Address Configuration Option format is shown below. The fields are transmitted from left to right.

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |     Type      |    Length     |           IP-Address
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
               IP-Address (cont)       |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Type

  3

Length

  6

IP-Address

  The four octet IP-Address is the desired local address of the sender of a Configure-Request. If all four octets are set to zero, it indicates a request that the peer provide the IP-Address information.

Default

  No IP address is assigned.

Next: 4. Van Jacobson TCP/IP header compression

Connected: An Internet Encyclopedia
RFC 1332 - 3.3. IP-Address